Drain fitting and method of production thereof



Jl115525, 1939- A. c. RECKER, 2,167,372

DRAIN FITTING AND METHODx onp'zoDUcTIoN THEREOF Fi-ied Aug. 27, 1938 [g513 j .i f

\ l l 1Z Patented July 25, 1939 d UNITED STATES DRAIN FITTING ANDMETHOD- OF PRODUC- TION THEREOF Adolph C. Recker, Watertowmconn.,assigner to Chase Brass & Copper Co., Incorporated, Waterbury, Conn., avcorporation Application August 27,

5 Claims.

This invention relates-to an improved construction and method of makingdrain-fittings having a strainer arranged transversely to the waterwayextending therethrough.

The primary object of the present invention is to provide an improvedconstruction and method of making a drain-fitting of this characterwhereby the period of time required to empty a lavatory bowl or similarreceptacle may be reduced to a minimum.

Another object of the invention is to provide an improved constructionand method of making a drain-fitting whereby quantity production ofsuperior drain-fittings may be economically carried on.

, One of the specific objects of the invention is to provide an improveddrain-fitting having an integrally-formed water-way strainer; which maybe advantageously constructed of drawn-tubular non-ferrous metals such,for example, as copper or copper-base alloys which are readilycoldworked to the desired form and provide smooth continuous surfacesfor the inner walls of the drain-fittings whereby the resistance opposedto the outlet dischargeof drainwater or other uid is reduced to aminimum.

With the above and other objects in view, as will appear to thoseskilled in the art from the present disclosure, this invention includesal1 features in the said disclosure which are novel over the prior art.

In the accompanying drawing, in which certain modes of carrying out thepresent invention are shown for illustrative purposes:

Fig. 1 is a view in central-vertical section of a drain-fittingembodying the present invention, and shown as being placed in alavatory-bowl or like receptacle;

Fig. 2 is a view on a smaller scale and in side- .elevation of thedrain-fitting shown in Fig. 1;l

Fig. 3 is a similar view but viewing the drainfitting from a right angleas compared to the showing of Fig.'2;

Fig. 4 is a top-plan view of the drain fitting;

Fig. 5 is a transverse-sectional view taken on the line 5-5 of Fig. 3;

Fig. 6 is a diagrammatic view in side elevation of the partly-completeddrain-fitting, showing relative arrangement of piercings to be made andwall-portions to be operated upon; and

Fig. 7 is a View in side-elevation similar to Fig. 3, but showing amodified form of the drainfitting embodying the present invention.

According to the embodied form of the invention shown in Figs. 1 to 6inclusive, the drain- 1938, Serial No. 227,156

fitting which is generally designated by the reference character I0,comprises: a tubular bodyportion II provided with overow-openings I2-I2and a bevelled-top-flange I3. Thesaid overflow-openings I 2-I2 areoppositely arranged, each with respect to the other, and inverticalregister with an overflow channel I4 which extends upwardlyaround and conforms to the vertical curvature of the bottom wall I5 of alavatory bowl as illustrated in Fig. 1.

The top-flange I3 of the drain-tting Ill is suitably formed and arrangedto be seated within a depression I6 formed in the bottom wall l5 of thelavatory bowl around an outlet-opening I'I therein which opensdownwardly into a circularoveriow chamber I8 into which the overflowchannel I4 discharges. The annular overo-wchamber I8 is formed within aprotuberant-hollow wall-portion I9 of the bottom wall I5 of the lavatorybowl. At the bottom, the said protuberant-hollow-wall portion I9 isprovided with a tubular-neck 20 through which extends a circular-opening2l coaXially aligned with the discharge-outlet-opening I'I in the bottomWall I5 of the lavatory bowl.

Throughout the greater portion of its length below the circular chamberI8, the tubular bodyportion I I is provided eXteriorly with screwthreads22 by means of which a clamping-nut 23 may be moved into clampingengagement with a gasket 24 interposed between the said clampingnut 23and the annular lower end of the tubularneck 2U. In this manner, thedrain-fitting I0 is securely fastened to the bottom wall I5 of thelavatory bowl by the clamping-action of topflange I3 and theclamping-nut 23.

As shown particularly well in Fig. 1, the drainfitting I0 is providedwith a waterway or flowagechannel 25 extending therethrough from top tobottom. Arranged transversely with respect to this waterway 25, is astrainer generally designated by the reference character 26 andcomprising two strainer-members 21-21 which are formed byinwardly-displaced circumferentialportions of the tubular body-portionII of the` drain-fitting I0. For this purpose and during the operationof forming the over-flow-openings I2--I2 the tubular body-portion I I,in its original imperforate condition, may be operated upon by suitablecutting and forming dies to partially sever therefrom thecircumferential wall-portions thereof which are subsequently displacedto form the strainer members 21 as well as to completely sever otherwall-portions which, when removed,

provide the major-portions of the overflow-openings |2-I2.

As shown diagrammatically in Fig. 6, during the progress of the piercingoperation by which the overflow-openings l Z-IZ are formed, each of thesaid over-flow-openings may be formed in complementary portions in thefollowing manner. According to the illustrated form of the inventionshown in Figs. 1 to 6 inclusive, a circumferential wall-portion 28 (Fig.6) of the originallyimperforate tubular body-portion Il at the topfmaybe completely severed therefrom by piercing the wall of the tubularbody-portion in parallel horizontal lines 29 and 33 and vertical lines3| and 32 to form a portion of a given one of theV overflow-openingsIZ-IZ extending above the upper marginal edge of each of thestrainermembers 21-2'! to the top of'said opening. At the same time, anadditional circumferential wallportion of the originally-imperforatetubular body-portion Il, corresponding to one of the strainer-members2l, may be partially severed therefrom by an additional piercing of thetubular wall along a horizontal line 33 substantially parallel to thecircular line 3E! already referred to. The circumferential wall-portionZl'a, thus partially severed from the tubular body H merges with thecircumferential wall of the said tubular body l l but, in the course ofthe operations performed thereon, is displaced inwardly about halfwayacross the waterway 25 preferably to form one of the strainer-members2l. 'I'he wall-portion 27a is displaced into abutment with theoppositely-arranged wall-portion 21a so that the resultingstrainer-members ZI-Zldmeet adjacent the central-longitudinal axis ofthe said waterway 25.

According to the modied form of the invention shown in Fig. 7, adrain-fitting which is Ygenerally designated by the reference character35, is constructed to comprise a tubular bodyportion 3i which isprovided at the top with a beveled top-flange 38 to be seated in thedepression !6 of the bottom-wall I5 of a lavatory bowl.

According to this form of the invention, the major portion of eachoverflow-opening 39 is formed by the complete removal of a portion ofthe cylindrical wall of the tubular body-portion 31, immediately belowthe strainer which is generally designated by the reference character 40and cornprises two strainer-members substantially similar inconstruction and arrangement to the strainermembers 21--21 of theembodiment described above, Accordingly, the strainer 40 is formed bythe inward displacement of the intermediate portions ofpartially-severed cylindrical wall-portions of the tubular body-portion31, immediately above the major portion of a given overflowopening 39which is thereby increased in vertical dimension to an extentcorresponding to the vertical depth of the strainer 40.

In making either of the illustrated forms of the invention, it will beseen that the tubular bodyportion Il (or 37) is made of suitable lengthin relation to its diameter to cause a free expansion of the issuingfluid column into flowing adherence with the inner wall of thedrain-fitting below the vena contracta of the fluid column. At the sametime, the overflow-outlets I2-l2 (or 39) are c onveniently arranged toYbreakthe 'vacuum which, in their absence, would occur around the venacontracta to exert a retarding influence on the outow of the uid columnfrom the lavatory bowl .oriother receptacle( Iolaimt 1l A drain-fitting,comprising: a tubular body provided with an axial through-Way for fluidand having oppositely-arranged overflow-openings in the circumferentialwall of the said tubular body,

the upper marginal portion of each of the said oppositely-arrangedopenings being formed by a partially-severed circumferential portion ofthe tubular body wall; the partially-severed portions eachV having ahorizontal-extension and a verticalextension and provided with a bottomwall and a top wall which merge with the tubular body wall at oppositeends, the said partially-severed portions of the tubular wall being eachdisplaced inwardly into juxtaposition each with respect to the other toform complementary reentrant strainermembers in which thevertical-extension of each of thesaid partially-severed portions ispresented in saidthrough-way longitudinally thereof and its said topwall presents a surface of uniform size and of the width of the wall ofthe tubular body to fluid flowing through the said through-way.

2. A drain-fitting, comprising: a tubular body provided with a waterwayextending axially therethrough and having oppositely-arrangedovernow-openings in the circumferential wall thereof, each of the saidoverflow-openings being formed partly by the complete removal of acircumferentially-extending original wall-portion of the said tubularbody'and partly by a reentrant partlysevered circumferentially-extendingwall-portion of the said tubular body, the said reentrant partlyseveredcircumferentially-extending wall-portions each having ahorizontal-extension and a vertical-extension and provided with a bottomwall and a top wall and being merged circumferentially at opposite endswith the said tubular body and having their reentrant portions injuxtaposition, each to the other, to provide a strainer in which thevertical-extension of each of the said partly-severed portions ispresented'in said waterway longitudinally thereof and its said top wallpresents a YsurfaceV ofV uniform size and of the width ofthe wall of thetubular body, to fluid flowing through the' waterway ofthe said tubularbody.

V3. A method of making a drain-tting provided with a water-way-strainer,consisting in: forming a tubular body having a waterway extendingtherethrough; in forming an opening in the lateralwall of said tubularbody by completely removing a lcircumferential wall-portion thereof; inpartially-severing from the said tubular body adjacent the said opening,an additional circumferentialY wall-portion to provide apartially-severed portion' having a horizontal-extension and avertical-extension and provided with a bottom walland a top wall andmerging endwise with the tubular body-walland inwardly displacing thelsaid additional circumferential wall-portion to provide a re-entrantportion located`adjacent said opening'and extendingat least, partwayacross the said waterway to form astrainer-'member in which thevertical-extension ofthe said partiallyseveredv portion is presentedin'said waterway longitudinallytliereof, and'its said top wall Apresentsa surface of uniform size and of the Width of the Wall of the tubularbody, to the flow of drainage Water through the said Waterway.

4. A method of making a drain-fitting provided with a waterway-strainer,consisting in: forming a tubular body having a waterway extendingtherethrough; completely removing oppositely-arranged circumferentialwall-portions of said tubular body having their upper and lower marginaledges arranged in spaced horizontal planes transverse to the axis of thesaid Waterway to form portions of oppositely-arrangedorveriioW-openings; partially severing from the tubular body alongcorresponding marginal edges of the partopenings thus formed, additionalcircumferential Wall-portions; the partially-severed additionalcircumferential Wall-portions each having a. horizontal-extension and avertical-extension and being each provided with a bottom Wall and a topWall; and inwardly-displacing the said additional circumferentialWall-portions of the tubular body in a commontransverse plane tocomplete the said oVerow-openings and to form a strainer comprising thesaid inwardly-displaced additional circumferential Wall-portions of thetubular body and each having the said vertical-extension thereofpresented in the said Waterway longitudinally thereof and having itssaid top Wall presenting a surface of uniform size and of the width ofthe Wall of the tubular body, to fluid passing through the saidWaterway.

5. A drain-fitting, comprising: a tubular body provided with an axialthrough-way for fluids and having an opening in the circumferential Wallthereof which is partly Yformed by the inward displacement into the saidaxial through-Way, of a partially-severed circumferential portion of itstubular Wall, the said circumferential portion of the tubular body wallhaving a horizontal-extension and a vertical-extension provided with abottom wall and a top Wall and its vertical-extension being ofrelatively small axial length in comparison with the axial depth of thesaid opening and having a reentrant medial bend formed therein andmerging circumferentially in opposite directions with the said tubularbody wall to form a strainer-member in which the vertical-extension ofthe said partially-severed circumferential portion is presented in saidthrough-Way longitudinally thereof and its said top Wall presents asurface of uniform size and of the Width of the Wall of said tubularbody to the flow of fluid through the said through-way.

ADOLPH C. BECKER.

